{"id":"CVE-2019-3635","aliases":["EUVD-2019-13270","GHSA-6j3c-cmq4-m6hv"],"status":"published","title":"MWG Proxy: Cross-Frame Scripting vulnerability","description":"Exfiltration of Data in McAfee Web Gateway (MWG) 7.8.2.x prior to 7.8.2.12 allows attackers to obtain sensitive data via crafting a complex webpage that will trigger the Web Gateway to block the user accessing an iframe.","severity":{"version":"3.0","score":4.3,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-08","score":0.01178,"percentile":0.67858,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"published":"2019-08-14T16:18:50Z","modified":"2026-06-17T02:35:19Z","products":[{"vendor":"mcafee","product":"web_gateway"},{"vendor":"mcafee, llc","product":"mcafee web gateway (mwg)"},{"vendor":"mcafee,llc","product":"mcafee web gateway (mwg)"}],"references":[{"url":"https://kc.mcafee.com/corporate/index?page=content\u0026id=SB10293","tags":["x_refsource_CONFIRM","x_transferred"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2019-3635"},{"url":"https://github.com/advisories/GHSA-6j3c-cmq4-m6hv"}],"sources":{"cve":[{"id":"CVE-2019-3635","title":"MWG Proxy: Cross-Frame Scripting vulnerability","description":"Exfiltration of Data in McAfee Web Gateway (MWG) 7.8.2.x prior to 7.8.2.12 allows attackers to obtain sensitive data via crafting a complex webpage that will trigger the Web Gateway to block the user accessing an iframe.","status":"published","published":"2019-08-14T16:18:50Z","modified":"2024-08-04T19:12:09.67Z","cvss":[{"version":"3.0","score":4.3,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N","level":"medium","assessor":"cna"}],"updated_at":"2026-11-02T14:20:23.048861Z"}],"euvd":[{"id":"EUVD-2019-13270","description":"Exfiltration of Data in McAfee Web Gateway (MWG) 7.8.2.x prior to 7.8.2.12 allows attackers to obtain sensitive data via crafting a complex webpage that will trigger the Web Gateway to block the user accessing an iframe.","status":"published","published":"2019-08-14T16:18:50Z","modified":"2024-08-04T19:12:09Z","cvss":[{"version":"3.0","score":4.3,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N","level":"medium"}],"updated_at":"2026-11-03T03:06:54.939848Z"}],"ghsa":[{"id":"GHSA-6j3c-cmq4-m6hv","title":"Exfiltration of Data in McAfee Web Gateway (MWG) 7.8.2.x prior to 7.8.2.12 allows attackers to...","description":"Exfiltration of Data in McAfee Web Gateway (MWG) 7.8.2.x prior to 7.8.2.12 allows attackers to obtain sensitive data via crafting a complex webpage that will trigger the Web Gateway to block the user accessing an iframe.","status":"published","published":"2022-05-24T16:53:37Z","modified":"2023-01-29T05:03:30Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N","level":"medium"}],"updated_at":"2026-11-02T14:45:19.964025Z"}],"nvd":[{"id":"CVE-2019-3635","description":"Exfiltration of Data in McAfee Web Gateway (MWG) 7.8.2.x prior to 7.8.2.12 allows attackers to obtain sensitive data via crafting a complex webpage that will trigger the Web Gateway to block the user accessing an iframe.","status":"published","published":"2019-08-14T17:15:11.33Z","modified":"2026-06-17T02:35:19.64Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N","level":"medium","assessor":"primary"},{"version":"3.0","score":4.3,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N","level":"medium","assessor":"secondary"},{"version":"2.0","score":4.3,"vector":"AV:N/AC:M/Au:N/C:P/I:N/A:N","level":"medium","assessor":"primary"}],"updated_at":"2026-11-02T14:05:22.878504Z"}]}}